title: Adsorption, activation, and dissociation of oxygen on doped oxides.
abstract: Charge transfer in the presence of dopants is relevant for the adorption and activation of small molecules, such as O2 . Scanning tunneling microscopy and DFT calculations provide evidence for the formation of strongly bound superoxo species on chemically inert, Mo-doped CaO films. This oxygen surface species shows a high propensity to dissociate. Dopants could also be important for the activation of hydrocarbons on inert oxides.
authors.affiliation: Abteilung Chemische Physik, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany).
authors.forename: Yi
authors.initials: Y
authors.lastname: Cui
authors.forename: Xiang
authors.initials: X
authors.lastname: Shao
authors.forename: Matthias
authors.initials: M
authors.lastname: Baldofski
authors.forename: Joachim
authors.initials: J
authors.lastname: Sauer
authors.forename: Niklas
authors.initials: N
authors.lastname: Nilius
authors.forename: Hans-Joachim
authors.initials: HJ
authors.lastname: Freund
keywords: dopants; heterogeneous catalysis; oxidation; oxygen activation; surface chemistry